Building wall structure



Aug. 12, 1947. i c. H. JUERGENS 2,425,619

BUILDING WALL STRUCTURE I Filed Jan. 2, 1945 Z'Sheets-Sheef 1 a "ll" 1W 4 aurmvwzgyx 22 20 76 22 Patented Aug. 12, 1947 UNITED STATES PATENT OFFICE.

2,425,619 BUILDING-WALL STRUCTURE Carl H. J uergens Milwaukee, Wis. Application'January 2, 1945, SerialNo. 571,087

2 Claims; 1

This invention relates to improvementsin an apparatus and method for casting. spaced concrete walls;

One of the objects of the invention is to provide'; a; wall structure of plastic'material havin insulating means; which may form an: integral part of the. wall after" the concrete. mixture'has hardenedi Another object of; the: invention is to provide a hollow. interiorly insulated concrete wall provided with transverse bars which tie the wall element's together andturnishzmeans 'f or securing insulating face plates-to the interior'faces of the wall.

Another object of the invention isto' provide for proper temperature and moisture control during the'setting of the concrete mixture.

More specifically the. invention comprehends twospaced.moldswith-means comprising tie rods for'holding the molds in spaced'relation, said tie rodsbeing bonded into the molded structure and forming a reinforcing element therefor anclv in addition projecting at their extremitiesto providefastening means'iorwall facinss as well as the outer mold body. In addition the tie rods or bars have means adjacent their ends for removabl-y holding mold plates inposition'during molding' ofsthe wall.

Other olojects-will more clearly hereinafter" appearbyreference to the accompanying; drawings wherein like characters of reference-'1 designate corresponding parts throughout the several .Lviews, in which:

Fig. 1 its a: topplan view: of? a sectionofrthe assembly', portions oi the; outer structure bein broken away.

Fig. 2 is a side elevationora section. ofa mold assembly.

Fig. his: a, bottom elevation of Fig. 2.

Fig. .4- is a; transverse section through the mold assemblyshowing. a concrete-wall section molded thereby. s

Fig: Erisan enlargedfragmentary perspective showing-details of the insulating sheets and one fomnofstay rod'connection, and

Fig. 6 is anzenlarged-detail partly insection taken'on'line- 6-6 of Fig. 1.

In molding the hollow wall it is obviously essential that two spaced moldsbe provided; that these molds be held in alignment and the removable parts he so constructed and arranged as to permit assembly and disassembly without inter:- ference. The mold for each of the spaced walls is formed in sections, each: mold being formed of substantially identical panels and thus a description of one of the mold sections will beample to; define the nature of the invention and the constructionzinvolved- Each mold-section assembly, is or: each :moldsection assembly for each spaced wall embodiesouter panels :I: and: innerxpanels 2,

these panels being formed of a suitable plastic material, anditheouter panels-being flanged outwardly at their marginal edges as indicated at 3. Radial ribs 4 and a vertical medial rib 5' are integrated! with this structure to add to its strength and to accommodate one of the fastening elements; Embedded in one of the end: and the bottom flange 3 at. spaced. points are metal insertsfi includingmetal cups l {or retaining the retracted winged head 8 of theffianged lock bolts 9. These flanged headed bolts 9 coo erate. with the outer cammed surfaces lD'adiacent-the key slots l'l' formedin and with themetal inserts located; at corresponding. spaced positions in the opposite end; flange 3'" and the top of: the adjacent outer panel of the cooperating mold assembly section. The-insertsfi in the vertical medial rib '5' have similar iastenings l5 which engage and lockthe ends: of the tie rods or plates l5. Slots are provided. in'the inserts 5 for the-passage of theendsofi rods lli adjacent to the outer face of the rind These slots may be partiallyv formed in: the medial-fiange-ii desired. The tie'rods l-B seat in registering slots IS in the inserts in the end walls so that the abutting flanges are in abuttingcontacti These tie rods or plates W- are relatively wide and? extend tothe outer marginal edgesioi the end flanges '3 as clearlyshown. The tie. rods orrplates l8'are slotted at It! toreceive wedges 20 which clamp the inner wall or panel 2 at; a predetermined position with the outer panel I. The slots in the tie rods l8 can be of any number and spaced to suit the thickness of'walls anticipated.

Theinner panel Z'oi eachmold section has its ends andbottom edges offset inwardly as at 21 to provide supporting: surfaces. for the edges-2i of theadjacent mold section.- It will be noted that the alternate'edges or flanges 2| are'staggered" to provide an overlapping of the ioi-ntsas shown in Fig. l. The ofiset is preferably of a widthid'entical with the thickness of the adjacent cooperatingedgoof the adjacent panel which is superposed thereon, thus providing, a continuous mold wallfisuriace.

Additional tie rods at. the top and bottom flanges; are: connected to the panelJ-inthe same manner'as: thetierods Nib-utiunction entirelyas spacers andretainers for the. innermold panels 2, as distinguished from the tie rods l% which space and 1 retain the entire mold assemmiesin addition to the individual panels. These tie rods are-roundedattheir'shanks as at 2-2 to fiacilitate the, movement of the concrete mixture. the pouring oi-the-wal-l-and have their-ends is bent at; a pointrrepresenting the position oi: the outer faceiorthe inner panel 2 to retain the same in thiszpositiom Washers '24: may bev utilized in connection. withthe hent'extremity 23- to-provide maximum-surface andassist in aligningthe in,

ner panel 2 with respect to the outer panel I. The outer ends of the stay rods are flattened at 25 to seat in the slots heretofore mentioned, these outer extremities 25 having key slots 2-6 through which the flange-lockis inserted. I r In the construction of the inner and 'outer panels of the mold sections, it is preferred that the inner panel 2 be formed of a plastic which will assist in the insulation of the wall both as;

to heat and moisture. While the outer panel I is designed to be formed .of plastic, suitably reinforced at its flanges and rib portions',:'neve rtheless this outer panel I might be made of a suitable light metal. It is intended that in this structure the inner panel 2 shall remain as an inner wall'facing while the outer panel will be removable, by virtue of the flange lock bolts and usable in connection with furthermolding operation.

In connection with the forming or the mold-of a plastic the necessity of having the standard steel forms oiled, is eliminated to prevent oxidation incident to the water in the'concrete mixture, or to moisture in the atmosphere while such forms are being stored.

It will be apparent that a hollow cast wall such as produced by the use of the instant invention makespossible the use of two separate concrete mixtures. For instance a structure may be cast or molded with the outside facingof a, white concrete mixture, while the inside wall structure formed by the inner panels could be .formed of cinder concrete. Such a hollow wall provides the vertical air space between the outer and inner vertical panels thereof, with the'tie'rods forming a reinforcin of the structure, and intermittently between the structures constitutes a satisfactory architectural construction. Further the outer surface Of the two spaced walls, which would be exposed by the removal of the outer panels I would'provide the metalextensions' formed by the extremitiesofthetie rods I6, I8 and 25, which extremities incorporating characteristics of a flanged lock known inthe prior art.

From the foregoing it will'be obvious to one skilled in the art that I have providedan assembly by means of which spaced walls of. concrete or the like can be formed and wherein portions of thestructure remain in situ after completion of the molding operation. Due to the.

fact that the molded structure is formed-of .a

plastic which inherently includes insulating characteristics it will naturally follow that the wall I constructed by use of the present invention is vastly improved insofar'as heat and moisture insulation is concerned. It is intended that the mold be formed of such 'a plastic material that it not only will have insulating characteristics but in addition all possibility of oxidation of the mold and mold parts will be avoided. In metal mold structures oxidation is incidental due to the use of water in forming the concrete mixture or to moisture in the atmosphere where such forms are stored.

Since plastic forms may possibly be poor conductors of the heat generated by the setting of concrete mixture, it becomes necessary to compensate for the poorer heat conduction -'of such materials and this is accomplished by flushing water or air through the space between the wall sections. This space, of course, will also function for the arrangement of electric conduits, piping of water, sewerage, gas, oil and the 1ike into or from the interior of the building a /Q1;

' materials, like wood or cloth pulp. As previously stated, these inner mold panelsections are to be left in place after the wall structures are completed and materially add to the insulating values of the wall. In some cases, it may be advlsable to coat the surfaces of the interior wall mold panels which are to be subjected to moisture of the concrete aggregate or to a flushing stream of water. Such a coating ma consist of a film of moisture and water resisting substance; 7

By the foregoing structure I have provided means for cooling theconcrete mixture after the same has been poured into the forms, this cooling beingdesirable due to heat generated by chemie cal reaction during the process of curing of the aggregate. This cooling may be accomplished by flushing-water through-the space between the opposite interior panelsv or by blastingcool 'air' the walls may be convenientlyobtained as heretofore described through the use ofthe project: ingtierods. p

Iclaim: e I r .1. A building wall structure for incorporation into a hollow concrete wall comprising spaced transverse bars, insulating sheets, meanson said bars remote. from, the ,ends thereof positioning and. permanently. securing thereon said insulating sheets .in spacedrelation, and means in .the ends of each bar for removab-ly holding molding plates in position for molding theexterioryfaces of the wall,,said secondmentioned.means-being subsequentlyavailable for attaching elements to the outsideface ofthe wall. v i

2. A hollow wall structure comprising spaced concrete wall elements, transverse, spaced .tie bars extending through the wall structureholding the wall elements inspaced relationship, means in the ends of said bars to secure thereto securing said insulating, sheets against the inner REFERENCES CITED The following references are of record inthe file ofthis patent: 7

UNITED STATES-PATENTS 7 V I Date I Number Name a r 1,950,049 Kleitz May 8, 1934 1,970,547 Anderson. *Aug.21, 1934 1,780,661 Wedberg Nov. 4,-1930 2,336,253

Jennings Dec. 7, 1943 

